Numerical simulations of thermo-electro-magnetic phenomena in YBCO films subjected to strains
Due to thermal contractions,tensions and electromagnetic forces,YBCO coated conductors in high-temperature superconductors apparatuses are subjected to mechanical strains.The strains cause the degradation of the critical current densities and influence thermo-electro-magnetic features in the conductors.Based on the dynamic process of thermo-electro-magnetic interaction,we report the results of numerical simulation of thermo-electro-magnetic phenomena in an infinite YBCO film subjected to a uniform in-plane strain in an alternating external magnetic field parallel to the sample surface.The numerical simulation shows the distributions of magnetic induction,electric intensity,current density and temperature in the film and their dependences on the uniform strain.The AC loss in the film is also calculated.We find that whether the magnetic field fully penetrates the superconductor is the key factor to influence the feature of AC loss.When the magnetic field cannot fully penetrate the superconductor the loss rises with increasing strain.When the magnetic field can fully penetrate the superconductor the feature is just opposite.
YBCO film thermo-electro-magnetic phenomenon strain
Jing Xia You-He Zhou
Department of Mechanics and Engineering Sciences,Lanzhou University,730000,People’s Republic of China
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）